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3GPP Glossaries:  Interfaces / Reference Points
for letter 'G' (4 of 4)

 

Gx   (Diameter)

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between  PCEF
and  PCRF / H-PCRF / V-PCRF

see it   here

specified from  Rel-7  in
TS 23.203, clause 5.2.2
TS 29.212, clause 4 

The Gx reference point is used for provisioning and removal of PCC rules from the PCRF to the PCEF and the transmission of traffic plane events from the PCEF to the PCRF. The Gx reference point can be used for charging control, policy control or both by applying AVPs relevant to the application. The Gx reference point can also be used for application's traffic detection and control.

Commands:
  • CCR/CCA:  CC-Request/Answer
  • RAR/RAA:  Re-Auth-Request/Answer
See also  RFC 6733  for Diameter Base Protocol, and  TS 29.230  for 3GPP-specific Diameter codes and identifiers.


Gxa   (Diameter)

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see it   here

specified from  Rel-8  in
TS 23.203, clause 5.2.7
TS 23.402, clause 4.4.1
TS 29.212, annex D 

See Gxx.


Gxb

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between  ePDG
and  PCRF / V-PCRF

see it   here

defined from  Rel-8  in
TS 23.402, clause 4.4.1 

This interface is not specified yet.


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between  ePDG
and  PCRF / V-PCRF

defined from  Rel-11  in
TS 23.002, clause 6a.13.7a
TS 29.212, clause e.4.3 

The reference point transports access information from ePDG to PCRF/vPCRF for WLAN UEs such as the UE local IP address and the UDP port number. Gxb* is only applicable to the interworking with Fixed Broadband Access network.


Gxc   (Diameter)

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between  S-GW
and  PCRF / V-PCRF

defined from  Rel-8  in
TS 23.402, clause 4.4.1 

See Gxx.


Gxx   (Diameter)

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between  PCRF
and  BBERF

see it   here

specified from  Rel-8  in
TS 23.203, clause 5.2.7
TS 29.212, clause 4a 

The Gxx reference point is located between the Policy and Charging Rules Function (PCRF) and the Bearer Binding and Event Reporting Function (BBERF). Gxc applies when the BBERF is located in the S-GW and Gxa applies when the BBERF is located in a trusted non-3GPP access.

The Gxx reference point is used for:
  • Provisioning, update and removal of QoS rules from the PCRF to the BBERF;
  • Transmission of traffic plane events from the BBERF to the PCRF.
Commands:
  • CCR/CCA:  CC-Request/Answer
  • RAR/RAA:  Re-Auth-Request/Answer
See also  RFC 6733  for Diameter Base Protocol, and  TS 29.230  for 3GPP-specific Diameter codes and identifiers.


Gy

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between  OCS
and  PCEF 

see it   here

specified from  Rel-7  in
TS 23.203, clause 5.2.4 

The Gy reference point allows online credit control for service data flow based charging. The functionalities required across the Gy reference point are defined in TS 32.251, clause 5.2  and  RFC 4006.


Gya

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between  OCS
and  ACC IF 

defined from  Rel-13  in
TS 23.203, clause S.8.4 

The Gya reference point is located between the Accounting Interworking function in the BBF defined Access Network and the 3GPP online charging system OCS located in the HPLMN and it transports charging information for 3GPP UE.


Gyn

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between  OCS
and  TDF

see it   here

specified from  Rel-12  in
TS 23.203, clause 5.2.10 

The Gyn reference point allows online credit control for charging in case of ADC rules based charging in TDF. The functionalities required across the Gyn reference point are defined in TS 32.251, clause 5.2  and  RFC 4006.


Gz

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between  OFCS
and  PCEF

see it   here

specified from  Rel-7  in
TS 23.203, clause 5.2.5 

The Gz reference point enables transport of service data flow based offline charging information. According to TS 32.240, clause 4.4.1.2, the Gz reference point is functionally equivalent to Ga for Legacy PS domain and to Ga or Rf for Evolved PS domain.


Gza

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between  OFCS
and  ACC IF

defined from  Rel-13  in
TS 23.203, clause S.8.3 

To transport charging information about 3GPP UE, the Gza reference point is located between Accounting Interworking function in the BBF defined network and the 3GPP offline charging system OFCS located in the VPLMN (roaming scenario) or in the HPLMN (non-roaming scenario).


Gzn

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between  OFCS
and  TDF

see it   here

specified from  Rel-12  in
TS 23.203, clause 5.2.11 

The Gzn reference point enables transport of offline charging information in case of ADC rule based charging in TDF.

According to TS 32.240, clause 4.4.1.6, The Gzn reference point is functionally equivalent to Ga or Rf in PS domain.



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